Battery and method for manufacturing battery

Abstract

The present disclosure provides a new battery capable of having an increased capacity per weight. A battery according to the present disclosure includes a positive electrode, a negative electrode, and an electrolyte located between the positive electrode and the negative electrode. The positive electrode includes a positive electrode layer containing graphene oxide. The electrolyte includes a Lewis acid containing a pentafluorophenyl group.

What is claimed is: 
     
         1 . A battery comprising:
 a positive electrode;   a negative electrode; and   an electrolyte located between the positive electrode and the negative electrode,   wherein the positive electrode includes a positive electrode layer containing graphene oxide, and   the electrolyte includes a Lewis acid containing a pentafluorophenyl group.   
     
     
         2 . The battery according to  claim 1 ,
 wherein the weight ratio of oxygen to carbon in the graphene oxide is greater than or equal to 0.1 and less than or equal to 0.3.   
     
     
         3 . The battery according to  claim 1 ,
 wherein the Lewis acid is tetrakis(pentafluorophenyl)borate.   
     
     
         4 . The battery according to  claim 1 ,
 wherein the concentration of the Lewis acid in the electrolyte is greater than or equal to 6% by weight.   
     
     
         5 . The battery according to  claim 1 ,
 wherein the concentration of the Lewis acid in the electrolyte is greater than or equal to 16% by weight.   
     
     
         6 . The battery according to  claim 1 ,
 wherein the negative electrode includes a negative electrode layer capable of occluding and releasing lithium ions.   
     
     
         7 . The battery according to  claim 6 ,
 wherein the negative electrode layer includes an active material containing a lithium element.   
     
     
         8 . The battery according to  claim 6 ,
 wherein the negative electrode layer includes lithium metal as an active material.   
     
     
         9 . The battery according to  claim 1 ,
 wherein the electrolyte is an electrolyte solution containing a nonaqueous solvent and a lithium salt dissolved in the nonaqueous solvent.   
     
     
         10 . The battery according to  claim 9 ,
 wherein the nonaqueous solvent is a carbonic acid ester.   
     
     
         11 . The battery according to  claim 9 ,
 wherein the lithium salt is lithium tetrafluoroborate (LiBF 4 ).   
     
     
         12 . A method for manufacturing a battery according to  claim 1  comprising:
 dissolving oxygen in an electrolyte including a Lewis acid containing a pentafluorophenyl group; and 
 charging a precursor battery including a positive electrode, a negative electrode, and the electrolyte in which oxygen is dissolved, the electrolyte being located between the positive electrode and the negative electrode, 
 wherein the positive electrode in the precursor battery includes a precursor layer containing a carbon material and the electrolyte. 
 
     
     
         13 . The method for manufacturing a battery according to  claim 12 ,
 wherein in the charging of a precursor battery, the precursor battery is charged while the potential of the positive electrode relative to a Li/Li +  reference electrode is set to be greater than or equal to 4.3 V.